Ventilator



Aug. 9;. 19m

A.' MILLER VENTILATOR Filed April 18. 1925 ATTORN EYS Patented Ailg. 19277'.

UNITE ST ras forma.

VENTILTOR.

Appueatitn mea Apru. 1s, icas. serial No. 224,129.

'This invention relatesto an improvement in ventilators and has for its object to pro-- vide a ventilator for `exhaust pipes Jfor lfoul a1r, smokestacks, or the like, which structure is so arranged that currents of air blow` ing from any direction `will be prevented i from passing down the main pipe, but .will be directed upwardly and downwardly by stantially vertical vertically disposed blanketed at'their ends from the cross or horizontal currents of air by annular bands. By directing the air in columns and in subpaths adjacent the outlet of themain pipe', -a vacuum or suction will be created in and around .the outlet of the pipe and thereb effectively exhaust the foul air or gases in t e pipe'or stack. v

Another object is to provide a ventilator which is simple, durable, eiiicient and economical to manufacture.

Another object is touprovide certain improvements in the form, construction and arrangement of the parts whereby the above named andother objects may attained.

A practical embodiment of my invention is. represented in the accompanying drawing, in which Fig. 1 represents 'an elevation partly in section of my improved ventilator attached to a portion of a pipe or smoke-stack.v

Fig. 2 represents a planview, partly in section, of the same.

Fig. 3 represents a .detail vertical section taken in the plane ofthe line IIL-IH of Fig. 2, looking in the direction voi? the arrows, and

Fig. 4 represents a detail vertical section of a modified form of cap.

by a bolt 5 and nut 6 or other suitable means.

The exhaust pipe or Asmoke-stack is denoted .by 1 and my improved ventilator isl brackets, in the secured thereto by means of present instance, four are shown, each of i which brackets is provided with a vertical portion 2 and an inwardly curved portion 3, the inner end ot which is bent laterally to` form a vfoot 4 which is secured to the pipe 1 The outer element of the ventilator has the general formation of two Jirustums of cones united at their bases, the walls f which are curved inwardly from the'bases andv toward a vertical direction. The upper member .or 'frustum 7 is provided with an ,inwardly and upwardly curved wall 8 l havingradially disposed partitions 9 formn channels which are be effectively l 'elusive the cap 21 is ing a series of tapered channels 10. An annular band 11 is secured to the upper end of the partitions 9, the association of which forms a series of tubular passages 12.

The lower member or frustum 13 is provided with ap inwardly and downwardly curved wall 14 having radially disposed partitions 15 forming a series of tapered 'channels 16 which terminate in a seriesof tubular passages 17 constructed by locating and securing lower end ofv the partitions 15. The bands 11 and 18 are shaped to conform to the curvature of the outer edges of the -partitions 9 and 15. Themember '13 together with its band 18 is held in position on the vertical portion `2 "of the brackets by notching the vertical portion 2 and bending outwardly the portionA 19 which receives and Supports the memberand its band.

To secure the uplper member 7 and band e' brackets, I -cut a notchl an annular band 18 to the the vertical portion 2 of each of thebrackets v and extends over thefpipe 1 to prevent rain and other foreign matter from entering the Plpel y 1n the form shownin Figs. 1 to 3 inspaced from the wall 8 of the memberV 7 toforma'I substantially vertical passage 24jforthejexit of the air orfgase's from' the pilpe. To'dei'lect lthelupward movement of At e 4gases from the passage 24, l extend the cap above the member 7 and` band'lli and flare it outwardly as shown at 25.

[A similar passage v26 is also formed betweenthe pipe andthe wall 1a of the memger 13 to exhaust the air between. ln Fig. 4I have shown 'a cap 27 formed of glass or otherJ transparent material so that light may be admitted therethrough. This cap. is supported on lugs 28 extending inwardly from the vertical ortion 29 'of the brackets, which brackets are -constructed and arranged similar to the brackets shown \in Figs. 1 to 3 inclusive.

or gases theresages 24 and 26.

From thel foregoing description it will be yseen that a very simple and durable ventilator has been produced, which will effec-v tively cause a 'continuous suction adjacent the upper end of the pipe for exhausting foul air, smoke or gases therefrom and which can be manufactured at an exceedingly low cost.

It is obvious that various changes may be resorted to in the form, construct-ion and arrangement of the several parts without departing from the 'spirit and scope of my in! vention; and hence, l do not intend vto be limited tothe details hereinv shown and described except as they may be included in the claims.

What I claim is v l. A ventilator comprising a pipe, an element disposed above and laterally from said pipe, said element having a series of curved tapered channels disposediongitudinally on its exterior for deflecting the air currents in substantiallyvertical paths, and a cap provided with a depending wall within the element and spaced therefrom for protecting the. pipe and providing an outlet therebetween.' 2. ventilator including, a pipe, an element disposed above and laterally from said pipe, said element comprisingfa curved cylindrical body portion having a plurality of vertically and radially disposed ribs developed from said body portion and arranged A to form a series `of longitudinally curved tapered channels on its exterior for deflecting air currents in substantially vertical paths, and a cap provided'with a depending wall within' thel element and spaced therefrom for protecting the pipe and providing an outlet therebetween. l

\3. A ventilatoricomprising a pipe, an element disposed above and laterally from said pipe, said element having a series of oppo sitely curved-tapered channels disposed longitudinally' on its exterior for deecting the the element and spaced therefrom for protesting the pipe and providing an outlet therebetween.`

5. A ventilator comprising a pipe, an elenient disposed above and laterally from said pipe, said element having tapered channels on its exterior, tubular passages coacting with said channels for deflecting the air currents in substantially vertical paths, and a cap within the element and spaced' therefrom for protecting the pipe and providing an outlet therebetween.

6. A ventilator comprising a pipe, an element disposed above and laterally from said pipe, said element having curved tapered channels on its exterior, tubular passages coacting with said kchannels for deflecting the air currents in substantially vertical paths, and a cap within the element and spaced therefrom for protecting the pipe and providing an outlet therebetween. 7. A ventilator comprising a pipe, an element disposed above and laterally from said pipe, said element having oppositely tapered channels on its exterior, .tubular vpassages. coacting withsaid channels for deiiecting the air currents in substantially vertical paths, and a cap' within the element and spaced therefrom for protecting the pipe and providing an outlet therebetween. t I

8. A ventilator comprising a pipe,` an element disposed above and laterally fromsaid pipe, said element having oppositely curved tapered channels on its exterior, tubular pas sages coacting with said channels for delecting the air currents in substantially vertical paths, anda cap within the elementand spaced therefrom for protecting the pipe and providing an outlet therebetween.

` l, lin testimony, that l claim the foregoing asA my invention, l have signed my name this 17th day .of April, 1925.

ARTHUR Minnen.

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